Johnson Controls LM8M/LMLM*MP Furnace Assembly PC Series Coils, Critical Coil Projection

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368261-UIM-A-0508

For horizontal left hand applications no conversion is required to an MC coil when used with a downflow/horizontal furnace. A mounting plate, supplied with every coil should always be installed on the side desig- nated as top side. See Figures 4 & 5.

Mounting Plate

Furnace

FIGURE 5: Horizontal Left Application

FURNACE ASSEMBLY - PC SERIES COILS

These upflow coils are designed for installation on top of upflow fur- naces only.

If the coil is used with a furnace of a different size, use a 45° transition to allow proper air distribution through the coil.

1.Position the coil casing over the furnace opening as shown in Fig- ure 6, "PC Series Upflow Coil Installation".

2.Place the ductwork over the coil casing flange and secure.

3.Check for air leakage between the furnace and coil casing and seal appropriately.

Do not drill any holes or drive any screws into the front duct flange on the coil in order to prevent damaging coil tubing. See Figure 6, "PC Series Upflow Coil Installation"

C

D(Min)

 

 

Flexible

 

 

Duct Collar

Field

 

 

Fabricated

 

 

Ductwork

 

Do not drill

 

 

or Screw

Upflow

 

this flange

Coil

 

 

Upflow

 

 

Furnace

 

 

Primary

Secondary

Alternate

Drain

Drain Location

Drain

 

 

FIGURE 6: PC Series Upflow Coil Installation

Table 2: Coil Projection Dimensions - PC Series Coils

COIL SIZE

DIMENSION “C” INCH

PC18

3-1/2

PC24

4-1/2

PC30, PC32, PC35

4-1/2

PC42, PC43, PC36, PC37

5-1/2

PC48

6-1/2

PC60

9

NOTE: Dimension “C” should be at least 2/3 of dimension “D”. See Fig- ure 6, "PC Series Upflow Coil Installation"

CRITICAL COIL PROJECTION

The coil assembly must be located in the duct such that a minimum dis- tance is maintained between the top of the coil and the top of the duct. Refer to Table 2, "Coil Projection Dimensions - PC Series Coils".

COIL / FURNACE ASSEMBLY - HC SERIES COILS

These coils are supplied ready to be installed in a right hand position or a left hand position. When used in conjunction with a horizontal furnace (blow through) application, the coil should be oriented with the opening of the “A” coil closest to the furnace. See Figures 7.

NOTE: Each coil is shipped with an external tie plate that should be used to secure the coil to the furnace. It should be installed on the back side of the coil using the dimpled pilot holes. See Figures 7.

Use tie plate

supplied with coil

Gas Furnace

FIGURE 7: Horizontal Left or Right application (Right Shown)

DOWNFLOW DUCT CONNECTORS

All downflow installations must use a suitable duct connector approved by the furnace manufacturer for use with this furnace. The duct connec- tors are designed to be connected to the rectangular duct under the floor and sealed. Refer to the instructions supplied with the duct con- nector for proper installation. Refer to the separate accessory parts list at the end of these instructions for the approved accessory duct con- nectors.

FURNACE

WARM AIR PLENUM

WITH 1” FLANGES

FIBERGLASS

INSULATION

FIBERGLASS TAPE

UNDER FLANGE

COMBUSTIBLE FLOOR

BASE ACCESSORY

FIGURE 8: Combustible Floor Base Accessory

RESIDENTIAL AND MODULAR HOME UPFLOW RETURN PLENUM CONNECTION

Return air may enter the furnace through the side(s) or bottom depend- ing on the type of application. Return air may not be connected into the rear panel of the unit.

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Johnson Controls Unitary Products

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Contents List of Sections Section I SafetyModels List of FiguresAnce to a 50 HZ Power Supply or a Voltage Above 130 Volts Specific Safety Rules and PrecautionsSafety Requirements Combustion AIR Quality List of ContaminantsCodes and Standards InspectionSection II Ductwork Furnace Location and ClearancesDuctwork General Information Furnace Assembly MC & FC Series Coils Floor Base and Ductwork Installation DownflowCOIL/FURNACE Assembly MC/FC/PC Series Coils Coil Flange InstallationDownflow Duct Connectors Furnace Assembly PC Series CoilsCoil / Furnace Assembly HC Series Coils Critical Coil ProjectionSuspended Furnace / Crawl Space Installation Bottom Return and Attic InstallationsAttic Installation Horizontal ApplicationSection III Filters Filter InstallationAttempt to install filters inside the furnace Side ReturnSection IV GAS Piping GAS SafetyGAS Piping Installation GAS Conversion for Propane LPSection V Electrical Power Electrical Power ConnectionsHigh Altitude Natural GAS Orifice Conversion AIR Conditioner Connections LOW Voltage Control Wiring ConnectionsSupply Voltage Connections Zoning OperationThermostat ID ModelsModulating TWO Stage AIR Furnace Conditioner UIM-A-0508 Modulating Furnace OD Models Single Stage Heat PumpThermostat Modulating Furnace TWO Stage Heat PumpSection VI Twinning and Staging Section VII Vent SystemAir Supply Openings and Ducts Combustion Air Source From OutdoorsDampers, Louvers and Grilles Canada Only Free AreaVentilated Combustion Air Section Viii START-UP AdjustmentsVent and Supply Outside Air Safety Check Procedure NOx Screen Removal Lo-NOx Models OnlySetup Test Mode GAS Piping Leak CheckCalculating the Furnace Input Natural GAS Seconds For Revolution Cu FtAdjustment of Manifold GAS Pressure Adjustment of Temperature RiseBlower Door Safety Switch Section IX Safety ControlsAdjustment of FAN Control Settings Rollout Switch ControlsPressure Controls Section X Normal Operation and DiagnosticsFurnace Control Diagnostics Limit ControlsDiagnostic Fault Code Storage and Retrieval Section XI Replacement Parts List Fabricated PartsSection XII Wiring Diagram Johnson Controls Unitary Products York Drive Norman, OK

LM8M/LMLM*MP, TM8M/TMLM*MP, CM8M/CMLM*MP, YM8M/YMLM*MP specifications

Johnson Controls TM8M/TMLM*MP, YM8M/YMLM*MP, LM8M/LMLM*MP, and CM8M/CMLM*MP are advanced temperature controllers designed for a wide range of applications in heating, ventilation, and air conditioning (HVAC) systems. These models stand out due to their robust features, cutting-edge technologies, and specific characteristics that cater to both residential and commercial environments.

One of the main features of the TM8M/TMLM*MP series is its user-friendly interface that incorporates a large, easy-to-read display. This allows for quick adjustments and monitoring of temperature settings, making it accessible for both skilled technicians and everyday users. The intuitive design ensures that users can efficiently navigate through various settings and configurations.

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Additionally, the series is robustly constructed to withstand harsh environmental conditions. Its durable casing and reliable components ensure long-term performance, making it suitable for a variety of settings, including industrial facilities and commercial properties.

Safety features are also integral to the design of the TM8M/TMLM*MP and related models. Built-in safeguards protect against over-temperature and other potential hazards, ensuring reliability and peace of mind for operators.

In summary, Johnson Controls TM8M/TMLM*MP, YM8M/YMLM*MP, LM8M/LMLM*MP, and CM8M/CMLM*MP controllers represent a convergence of user-friendly design, advanced technology, flexibility, and safety. Their ability to adapt to diverse applications while optimizing energy use makes them a critical component in modern HVAC systems, ensuring comfort and efficiency in every environment.
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